Automobile signal



Jan. 13, 1931. w. P. MURRELL ET AL AUTOMOBILE SIGNAL Filed Sept. 27, 1928 2 Sheets-Sheet l JIIIIIYWIIIII INVENTOR5 IV BMu IFZZZ A TTORNEYS.

Jan. 13, 1931.

W. P MURRELL ETAL AUTOMOBILE S IGNAL 2 Sheets-Sheet 2 Filed Sept. 2'7, 1928 INVEMTORJ W R M um 1 a] Z Patented Jam 13, 1931 UNITED STATES PATENT OFFICE WILLIAM F. MUBRELL AND EDWIN H'. SI IOCKLEY, OF HOBART, OKLAHOMA AUTOMOBILE SIGNAL Application filed September 27, 1928. Serial No. 808,789

This invention relates to automobile signals and more particularly to a device for phonographically producing a warning signal.

An important object of the invention is to produce a device of this character which is so constructed that a simple contact mechanism is provided y means of which a single warning word or sound may beicontinually 0 reproduced during the operation of the signal.

A further object of the invention is to provide a device of this character which is motor-driven and in which the armature of the motor serves as a support for a phonographic'record.

These and other'objects we attain by the construction shown in the accompanying drawings, wherein for the purpose of illustration is shown a preferred embodiment of 90 our invention and wherein Figure 1 is a horizontal sectional view through a signal constructed in accordance with our invention; 7

Figure 2 is a longitudinal vertical sectional view therethrough;

Figure 3 is a section on the line 33 of Figure 2;

Figure 4 is a detail sectional view showing the manner of mounting the armature suport. p Referring now more particularly to the drawings, the numeral generally designates a frame. This frame includes spaced plates 11 and 12 through the upper portions .1 of which are formed openings receiving and supporting a megaphone 13 and the tubular neck 14 thereof. Secured to the frame plates 11 and 12 are a pair of parallel arms 15 which are connected at their free or rear 1 ends bya transverse bar 17. The bar 17 is substantiall U-shaped in form having the arms 17a tiereof engaging the inner faces of the arms 15 and secured thereto by bolts 17?) extending through slots formed in the arms 17a, so that the bar 17 may be vertically adjusted and adjusted toward and awayv from the plate 12. The plate 12 and bar 17 have bearings 12a and 126, respectively for the reception of trunnions 18 formed Each of these grooves has recorded therein some warning word or sound, such as the word Gangway. Stops 22 are provided to limit the movement of the cylinder 21 toward the armature end of the armature element.

The inner end of the tubular neck 14 is provided with a reproducer 23 which is telescopically engaged with the tube through a sleeve'extension 24, so that the reproducer may be adjusted to place the needle 25 thereof many desired groove. The pole pieces 26 of the motor will be carried by the arms 15 and rigidly secured thereto. The winding of the field of the motor will be such that a relatively low speed of rotation of the armature will result. The entire mechanism, with 7 the exception of the mouth of the megaphone horn, may be placed within a suitable casing 27. This casing will be readily removable and'when removed, will give access to the reproducer.

When the record cylinder 21 becomes faulty as the result of continued use, it may be removed and a new one substituted therefor. To effect this change in record 0 linders, the casing 27 is first removed, an the so bolts 17b and set screw 2311 are loosened. The bar 17 is then moved rearwardly to carry its bearing 12?) away from the rear trunnion 18 of the armature 19. The bar is then swung vertically downward on the bolts 17b to arrange it below the armature 19, and the re producer 23 is then turned to carry its stylus 25'out of engagement with the record cylinder 21. The armature l9 and mandrel 20 are now moved rearwardly with the record cylin- 0e der 21 held against movement by the hand, and this movement of these parts is continued until the mandrel is fully withdrawn from the record cylinder. The record cylinder-25 may now be removed and a new one inserted 5 in its place. After this has been done, the

armature 19 and mandrel are moved forwardly until the new record cylinder o'ccupies its properplace on the mandrel. The bar 17 is then returned to its normal position with its bearing 12?) receiving the rear trun nion 18 of the armature 19 and'then this bar is locked in positionby tightening the bolts 17 b. The reproducer 23 is now turned to carry its stylus into engagement with one of the grooves of the new record cylinder, and it is secured against accidental displacement by tightening the set screw 23a. It is to be noted that the bearing 12?) is so constructed as to permit it to be readily withdrawn from the rear trunnion 18 of the armature 19, and that the bearing 12a is so constructed as to permit the front trunnion 18 of the armature to be readily withdrawn therefrom. To prevent the armature 19 and mandrel 20 from moving forwardly, a collar 20a may be secured to the, front trunnion 18 for contact with the rear side of the front bearing 12a, the armature and mandrel being held against rearward movement by the rear wall of the casing 27 with whichthe rear trunnion 18 contacts. When the'groove of the record 21 engaged by the needle 25 becomes worn, the needle is engaged with another of the grooves by first loosening the set screw 23a, by then turning the reproducer 23 and its sleeve 24 about their longitudinal axis to carry the needle out of engagement with the record, by then moving the reproducer and sleeve longitudinally of the record to arrange the needle .in alinement with another groove, and by then turning the reproducer and sleeve to carry the needle into such groove. The set screw 23a is then turned up to secure the reproducer 23 against accidental movement.

Since the construction hereinbefore set forth is capable of a certain ran e of change and modification without materially departing from the spirit of the invention, we do not limit ourselves to such specific structure except as hereinafter claimed.

We claim An audible signal, comprising a cylindrical record having a series of annular grooves each having recorded therein a warning word or'sound, means for supporting and rotating the record, a megaphone having a tubular neck arranged in fixed spaced parallel relation to the record, a reproducer embodying a 00 needle engaging in a groove of the record,

a sleeve carrying the reproducer and mounted in the tubular neck and adjustable rotatably and axially with respect thereto and to the record to permit the needle, when the groove of the record engaged therehv be- 

